There were a few points in my departure to the latest version of Edubuntu - 7.10 that I thought I may need to downgrade. Unfortunately, it's often the case that a new version of the operating system comes complete with a new set of bugs that only maturity will iron out.

One problem in particular was really bugging me and rendered the upgrade useless for our system if I didn't find a fix - quick! The problem came when a thin client displayed it's login screen, the monitor would just go off with a disturbing message (from the monitor) saying 'unsupported resolution' or something to that effect - the message may vary between different models of monitors.

It quickly became clear that the monitor does not support the resolution that Edubuntu or Xorg was trying to output. I thought a quick tweak in the admin panel might sort things out but the problem was a little deeper - as are many linux problems. Once again I was forced to use the now very familiar terminal.

Step 1Locate the file lts.conf using this path:

/opt/ltsp/i386/etc/lts.conf

Step 2Add the following line:

[default]X_MODE_0 = 1024x768 #or other resolution that you'd like to use

Step 3Bring up the terminal and type:

ltsp-update-image

Step 4Reboot the server, when it's all booted up then all systems go with the thin clients! Now you can see!